<template>
  <el-container class="home-container">
            <!-- 头部区域 -->
            <el-header>   
                <div>
                    <img src="../assets/heima.png">
                    <span>电商后台管理系统</span>
                </div>
                <el-button type="info" @click="logout">退出</el-button>
            </el-header>

            <!-- 内容区域 -->
            <el-container>
                <el-aside :width="isCollapse ? '64px' : '200px'">
                    <div class="toggle-button" @click="toggleCollapse">|||</div>
                    <!-- 侧边栏菜单区 --> 
                    <el-menu
                    background-color="#333744"
                    text-color="#fff"
                    active-text-color="#409eff"
                    :unique-opened = "true"
                    :collapse="isCollapse"
                    :collapse-transition = "false"
                    :router = "true"
                    :default-active="activePath"
                    >
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
                        <!-- 一级菜单内容模板区域 -->
                        <template slot="title">
                            <!-- 图标 -->
                        <i :class="iconsObj[item.id]"></i>
                        <!-- 菜单文本 -->
                        <span>{{item.authName}}</span>
                        </template>
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/' +SubItem.path" v-for="SubItem in item.children" :key="SubItem.id" @click="saveNavStatu('/' +SubItem.path)">
                            <template slot="title">
                            <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 菜单文本 -->
                            <span>{{SubItem.authName}}</span>
                        </template>
                        </el-menu-item>
                    </el-submenu>
                    </el-menu>
                </el-aside>
                <el-main>
                    <router-view></router-view>

                </el-main>
            </el-container>
        </el-container>
</template>
<script>
import { log } from 'util'
export default {
    data : function(){
        return {
            //左侧菜单数据
            menuList:[],
            iconsObj : {
                '125' : "iconfont icon-users",
                '103' : "iconfont icon-tijikongjian",
                '101' : "iconfont icon-shangpin",
                '102' : "iconfont icon-danju",
                '145' : "iconfont icon-baobiao"
            },
            isCollapse : false,
            //被激活的链接地址
            activePath:''


        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('path')
    },
    methods : {
        logout(){
            window.sessionStorage.clear('token')
            this.$router.push('/login')
        },
        async getMenuList(){
            const {data : res} = await this.$http.get('menus')
            console.log(res);            
            if(res.meta.status !== 200) return this.$message.error('请求失败')
            this.menuList = res.data
        },
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
            
        },
        saveNavStatu(path){
            window.sessionStorage.setItem('path',path)
            this.activePath = path;
        }
    }

}
</script>
<style lang="less" scoped>
    .home-container {
        height : 100%;
    }
    .el-header {
        display: flex;
        justify-content: space-between;
        padding-left : 0;
        align-items: center;
        background-color: #373D41;
        color : #fff;
        font-size:20px;
        > div {
            display: flex;
            align-items: center;
            margin-left : 15px;
            span {
                margin-left : 10px;
            }
        }
        
    }
    .el-aside {
        background-color: #333744;
        .toggle-button {
            background-color: #4a5064;
            font-size:10px;
            line-height: 24px;
            text-align: center;
            color:#fff;
            letter-spacing: 0.2em;
            cursor: pointer;

        }
        .el-menu {
            border-right : 0;
        }
    }
    .el-main {
        background-color: #eaedf1;
    }
    .iconfont {
        margin-right : 15px
    }
</style>